-33.44% is the change from 921 to 613
Calculation steps:
[( 613 - 921 ) ÷ 921] x 100 = -33.44%
Formula
Percentage change = [(613 - 921) / 921] x 100
Subtract the new number by the original number
613 - 921 = -308
-308 ÷ 921 = -0.3344191096634093
-0.3344191096634093 x 100 = -33.44%