-71.47% is the change from 771 to 220
Calculation steps:
[( 220 - 771 ) ÷ 771] x 100 = -71.47%
Formula
Percentage change = [(220 - 771) / 771] x 100
Subtract the new number by the original number
220 - 771 = -551
-551 ÷ 771 = -0.7146562905317769
-0.7146562905317769 x 100 = -71.47%