-81.08% is the change from 777 to 147
Calculation steps:
[( 147 - 777 ) ÷ 777] x 100 = -81.08%
Formula
Percentage change = [(147 - 777) / 777] x 100
Subtract the new number by the original number
147 - 777 = -630
-630 ÷ 777 = -0.8108108108108109
-0.8108108108108109 x 100 = -81.08%