-20.1% is the change from 766 to 612
Calculation steps:
[( 612 - 766 ) ÷ 766] x 100 = -20.1%
Formula
Percentage change = [(612 - 766) / 766] x 100
Subtract the new number by the original number
612 - 766 = -154
-154 ÷ 766 = -0.2010443864229765
-0.2010443864229765 x 100 = -20.1%