-64.85% is the change from 771 to 271
Calculation steps:
[( 271 - 771 ) ÷ 771] x 100 = -64.85%
Formula
Percentage change = [(271 - 771) / 771] x 100
Subtract the new number by the original number
271 - 771 = -500
-500 ÷ 771 = -0.648508430609598
-0.648508430609598 x 100 = -64.85%