-31.52% is the change from 771 to 528
Calculation steps:
[( 528 - 771 ) ÷ 771] x 100 = -31.52%
Formula
Percentage change = [(528 - 771) / 771] x 100
Subtract the new number by the original number
528 - 771 = -243
-243 ÷ 771 = -0.3151750972762646
-0.3151750972762646 x 100 = -31.52%