-15.37% is the change from 787 to 666
Calculation steps:
[( 666 - 787 ) ÷ 787] x 100 = -15.37%
Formula
Percentage change = [(666 - 787) / 787] x 100
Subtract the new number by the original number
666 - 787 = -121
-121 ÷ 787 = -0.15374841168996187
-0.15374841168996187 x 100 = -15.37%