-84.31% is the change from 771 to 121
Calculation steps:
[( 121 - 771 ) ÷ 771] x 100 = -84.31%
Formula
Percentage change = [(121 - 771) / 771] x 100
Subtract the new number by the original number
121 - 771 = -650
-650 ÷ 771 = -0.8430609597924773
-0.8430609597924773 x 100 = -84.31%