-8.7% is the change from 632 to 577
Calculation steps:
[( 577 - 632 ) ÷ 632] x 100 = -8.7%
Formula
Percentage change = [(577 - 632) / 632] x 100
Subtract the new number by the original number
577 - 632 = -55
-55 ÷ 632 = -0.08702531645569621
-0.08702531645569621 x 100 = -8.7%