-90.79% is the change from 771 to 71
Calculation steps:
[( 71 - 771 ) ÷ 771] x 100 = -90.79%
Formula
Percentage change = [(71 - 771) / 771] x 100
Subtract the new number by the original number
71 - 771 = -700
-700 ÷ 771 = -0.9079118028534371
-0.9079118028534371 x 100 = -90.79%