-77.06% is the change from 959 to 220
Calculation steps:
[( 220 - 959 ) ÷ 959] x 100 = -77.06%
Formula
Percentage change = [(220 - 959) / 959] x 100
Subtract the new number by the original number
220 - 959 = -739
-739 ÷ 959 = -0.7705943691345151
-0.7705943691345151 x 100 = -77.06%