-76.11% is the change from 921 to 220
Calculation steps:
[( 220 - 921 ) ÷ 921] x 100 = -76.11%
Formula
Percentage change = [(220 - 921) / 921] x 100
Subtract the new number by the original number
220 - 921 = -701
-701 ÷ 921 = -0.761129207383279
-0.761129207383279 x 100 = -76.11%