-33.77% is the change from 921 to 610
Calculation steps:
[( 610 - 921 ) ÷ 921] x 100 = -33.77%
Formula
Percentage change = [(610 - 921) / 921] x 100
Subtract the new number by the original number
610 - 921 = -311
-311 ÷ 921 = -0.33767643865363733
-0.33767643865363733 x 100 = -33.77%