-35.84% is the change from 812 to 521
Calculation steps:
[( 521 - 812 ) ÷ 812] x 100 = -35.84%
Formula
Percentage change = [(521 - 812) / 812] x 100
Subtract the new number by the original number
521 - 812 = -291
-291 ÷ 812 = -0.3583743842364532
-0.3583743842364532 x 100 = -35.84%