-77.83% is the change from 812 to 180
Calculation steps:
[( 180 - 812 ) ÷ 812] x 100 = -77.83%
Formula
Percentage change = [(180 - 812) / 812] x 100
Subtract the new number by the original number
180 - 812 = -632
-632 ÷ 812 = -0.7783251231527094
-0.7783251231527094 x 100 = -77.83%