-79.69% is the change from 768 to 156
Calculation steps:
[( 156 - 768 ) ÷ 768] x 100 = -79.69%
Formula
Percentage change = [(156 - 768) / 768] x 100
Subtract the new number by the original number
156 - 768 = -612
-612 ÷ 768 = -0.796875
-0.796875 x 100 = -79.69%