-92.6% is the change from 770 to 57
Calculation steps:
[( 57 - 770 ) ÷ 770] x 100 = -92.6%
Formula
Percentage change = [(57 - 770) / 770] x 100
Subtract the new number by the original number
57 - 770 = -713
-713 ÷ 770 = -0.925974025974026
-0.925974025974026 x 100 = -92.6%