The "balance" field refers to your current statement balance. The "high balance" can be your
current balance too if you're just getting started. It can also be used to track existing payoff progress
before signing up on the site. For example, let's say you have a credit card with a current balance of $1,000,
but it got as high as $5,000 last year. You've been paying it down in the meantime and the current balance is
down to $1,000. The high balance would be the $5,000 number. However, if you want to start the progress from
scratch, just use your current balance as the high balance too. The highest balance is only used to track your
overall payoff progress percentage.