-78.31% is the change from 521 to 113
Calculation steps:
[( 113 - 521 ) ÷ 521] x 100 = -78.31%
Formula
Percentage change = [(113 - 521) / 521] x 100
Subtract the new number by the original number
113 - 521 = -408
-408 ÷ 521 = -0.783109404990403
-0.783109404990403 x 100 = -78.31%