290% is the change from 250 to 975
Calculation steps:
[( 975 - 250 ) ÷ 250] x 100 = 290%
Formula
Percentage change = [(975 - 250) / 250] x 100
Subtract the new number by the original number
975 - 250 = 725
725 ÷ 250 = 2.9
2.9 x 100 = 290%
Example