-37.24% is the change from 521 to 327
Calculation steps:
[( 327 - 521 ) ÷ 521] x 100 = -37.24%
Formula
Percentage change = [(327 - 521) / 521] x 100
Subtract the new number by the original number
327 - 521 = -194
-194 ÷ 521 = -0.3723608445297505
-0.3723608445297505 x 100 = -37.24%