-61.1% is the change from 833 to 324
Calculation steps:
[( 324 - 833 ) ÷ 833] x 100 = -61.1%
Formula
Percentage change = [(324 - 833) / 833] x 100
Subtract the new number by the original number
324 - 833 = -509
-509 ÷ 833 = -0.6110444177671068
-0.6110444177671068 x 100 = -61.1%