-15.56% is the change from 771 to 651
Calculation steps:
[( 651 - 771 ) ÷ 771] x 100 = -15.56%
Formula
Percentage change = [(651 - 771) / 771] x 100
Subtract the new number by the original number
651 - 771 = -120
-120 ÷ 771 = -0.1556420233463035
-0.1556420233463035 x 100 = -15.56%