-83.92% is the change from 771 to 124
Calculation steps:
[( 124 - 771 ) ÷ 771] x 100 = -83.92%
Formula
Percentage change = [(124 - 771) / 771] x 100
Subtract the new number by the original number
124 - 771 = -647
-647 ÷ 771 = -0.8391699092088197
-0.8391699092088197 x 100 = -83.92%