-12.94% is the change from 765 to 666
Calculation steps:
[( 666 - 765 ) ÷ 765] x 100 = -12.94%
Formula
Percentage change = [(666 - 765) / 765] x 100
Subtract the new number by the original number
666 - 765 = -99
-99 ÷ 765 = -0.12941176470588237
-0.12941176470588237 x 100 = -12.94%