-82.15% is the change from 773 to 138
Calculation steps:
[( 138 - 773 ) ÷ 773] x 100 = -82.15%
Formula
Percentage change = [(138 - 773) / 773] x 100
Subtract the new number by the original number
138 - 773 = -635
-635 ÷ 773 = -0.8214747736093143
-0.8214747736093143 x 100 = -82.15%