-73.61% is the change from 974 to 257
Calculation steps:
[( 257 - 974 ) ÷ 974] x 100 = -73.61%
Formula
Percentage change = [(257 - 974) / 974] x 100
Subtract the new number by the original number
257 - 974 = -717
-717 ÷ 974 = -0.7361396303901437
-0.7361396303901437 x 100 = -73.61%