-79.69% is the change from 778 to 158
Calculation steps:
[( 158 - 778 ) ÷ 778] x 100 = -79.69%
Formula
Percentage change = [(158 - 778) / 778] x 100
Subtract the new number by the original number
158 - 778 = -620
-620 ÷ 778 = -0.7969151670951157
-0.7969151670951157 x 100 = -79.69%