-75.56% is the change from 900 to 220
Calculation steps:
[( 220 - 900 ) ÷ 900] x 100 = -75.56%
Formula
Percentage change = [(220 - 900) / 900] x 100
Subtract the new number by the original number
220 - 900 = -680
-680 ÷ 900 = -0.7555555555555555
-0.7555555555555555 x 100 = -75.56%