-33.46% is the change from 783 to 521
Calculation steps:
[( 521 - 783 ) ÷ 783] x 100 = -33.46%
Formula
Percentage change = [(521 - 783) / 783] x 100
Subtract the new number by the original number
521 - 783 = -262
-262 ÷ 783 = -0.334610472541507
-0.334610472541507 x 100 = -33.46%