-15.91% is the change from 974 to 819
Calculation steps:
[( 819 - 974 ) ÷ 974] x 100 = -15.91%
Formula
Percentage change = [(819 - 974) / 974] x 100
Subtract the new number by the original number
819 - 974 = -155
-155 ÷ 974 = -0.1591375770020534
-0.1591375770020534 x 100 = -15.91%