-76.01% is the change from 521 to 125
Calculation steps:
[( 125 - 521 ) ÷ 521] x 100 = -76.01%
Formula
Percentage change = [(125 - 521) / 521] x 100
Subtract the new number by the original number
125 - 521 = -396
-396 ÷ 521 = -0.7600767754318618
-0.7600767754318618 x 100 = -76.01%