-31.93% is the change from 974 to 663
Calculation steps:
[( 663 - 974 ) ÷ 974] x 100 = -31.93%
Formula
Percentage change = [(663 - 974) / 974] x 100
Subtract the new number by the original number
663 - 974 = -311
-311 ÷ 974 = -0.3193018480492813
-0.3193018480492813 x 100 = -31.93%