-59.12% is the change from 521 to 213
Calculation steps:
[( 213 - 521 ) ÷ 521] x 100 = -59.12%
Formula
Percentage change = [(213 - 521) / 521] x 100
Subtract the new number by the original number
213 - 521 = -308
-308 ÷ 521 = -0.5911708253358925
-0.5911708253358925 x 100 = -59.12%