-56.62% is the change from 521 to 226
Calculation steps:
[( 226 - 521 ) ÷ 521] x 100 = -56.62%
Formula
Percentage change = [(226 - 521) / 521] x 100
Subtract the new number by the original number
226 - 521 = -295
-295 ÷ 521 = -0.5662188099808061
-0.5662188099808061 x 100 = -56.62%