-83.7% is the change from 773 to 126
Calculation steps:
[( 126 - 773 ) ÷ 773] x 100 = -83.7%
Formula
Percentage change = [(126 - 773) / 773] x 100
Subtract the new number by the original number
126 - 773 = -647
-647 ÷ 773 = -0.8369987063389392
-0.8369987063389392 x 100 = -83.7%