-15.5% is the change from 974 to 823
Calculation steps:
[( 823 - 974 ) ÷ 974] x 100 = -15.5%
Formula
Percentage change = [(823 - 974) / 974] x 100
Subtract the new number by the original number
823 - 974 = -151
-151 ÷ 974 = -0.15503080082135523
-0.15503080082135523 x 100 = -15.5%