-60.15% is the change from 813 to 324
Calculation steps:
[( 324 - 813 ) ÷ 813] x 100 = -60.15%
Formula
Percentage change = [(324 - 813) / 813] x 100
Subtract the new number by the original number
324 - 813 = -489
-489 ÷ 813 = -0.6014760147601476
-0.6014760147601476 x 100 = -60.15%