-76.57% is the change from 939 to 220
Calculation steps:
[( 220 - 939 ) ÷ 939] x 100 = -76.57%
Formula
Percentage change = [(220 - 939) / 939] x 100
Subtract the new number by the original number
220 - 939 = -719
-719 ÷ 939 = -0.7657082002129926
-0.7657082002129926 x 100 = -76.57%