-51.06% is the change from 662 to 324
Calculation steps:
[( 324 - 662 ) ÷ 662] x 100 = -51.06%
Formula
Percentage change = [(324 - 662) / 662] x 100
Subtract the new number by the original number
324 - 662 = -338
-338 ÷ 662 = -0.5105740181268882
-0.5105740181268882 x 100 = -51.06%