-79.65% is the change from 521 to 106
Calculation steps:
[( 106 - 521 ) ÷ 521] x 100 = -79.65%
Formula
Percentage change = [(106 - 521) / 521] x 100
Subtract the new number by the original number
106 - 521 = -415
-415 ÷ 521 = -0.7965451055662188
-0.7965451055662188 x 100 = -79.65%