-73.72% is the change from 974 to 256
Calculation steps:
[( 256 - 974 ) ÷ 974] x 100 = -73.72%
Formula
Percentage change = [(256 - 974) / 974] x 100
Subtract the new number by the original number
256 - 974 = -718
-718 ÷ 974 = -0.7371663244353183
-0.7371663244353183 x 100 = -73.72%