-13.76% is the change from 974 to 840
Calculation steps:
[( 840 - 974 ) ÷ 974] x 100 = -13.76%
Formula
Percentage change = [(840 - 974) / 974] x 100
Subtract the new number by the original number
840 - 974 = -134
-134 ÷ 974 = -0.1375770020533881
-0.1375770020533881 x 100 = -13.76%