-87.87% is the change from 577 to 70
Calculation steps:
[( 70 - 577 ) ÷ 577] x 100 = -87.87%
Formula
Percentage change = [(70 - 577) / 577] x 100
Subtract the new number by the original number
70 - 577 = -507
-507 ÷ 577 = -0.878682842287695
-0.878682842287695 x 100 = -87.87%