-28.77% is the change from 921 to 656
Calculation steps:
[( 656 - 921 ) ÷ 921] x 100 = -28.77%
Formula
Percentage change = [(656 - 921) / 921] x 100
Subtract the new number by the original number
656 - 921 = -265
-265 ÷ 921 = -0.28773072747014117
-0.28773072747014117 x 100 = -28.77%