-27.6% is the change from 797 to 577
Calculation steps:
[( 577 - 797 ) ÷ 797] x 100 = -27.6%
Formula
Percentage change = [(577 - 797) / 797] x 100
Subtract the new number by the original number
577 - 797 = -220
-220 ÷ 797 = -0.27603513174404015
-0.27603513174404015 x 100 = -27.6%