-33.29% is the change from 781 to 521
Calculation steps:
[( 521 - 781 ) ÷ 781] x 100 = -33.29%
Formula
Percentage change = [(521 - 781) / 781] x 100
Subtract the new number by the original number
521 - 781 = -260
-260 ÷ 781 = -0.33290653008962867
-0.33290653008962867 x 100 = -33.29%