-77.75% is the change from 773 to 172
Calculation steps:
[( 172 - 773 ) ÷ 773] x 100 = -77.75%
Formula
Percentage change = [(172 - 773) / 773] x 100
Subtract the new number by the original number
172 - 773 = -601
-601 ÷ 773 = -0.777490297542044
-0.777490297542044 x 100 = -77.75%