-73.67% is the change from 976 to 257
Calculation steps:
[( 257 - 976 ) ÷ 976] x 100 = -73.67%
Formula
Percentage change = [(257 - 976) / 976] x 100
Subtract the new number by the original number
257 - 976 = -719
-719 ÷ 976 = -0.7366803278688525
-0.7366803278688525 x 100 = -73.67%