279.38% is the change from 257 to 975
Calculation steps:
[( 975 - 257 ) ÷ 257] x 100 = 279.38%
Formula
Percentage change = [(975 - 257) / 257] x 100
Subtract the new number by the original number
975 - 257 = 718
718 ÷ 257 = 2.7937743190661477
2.7937743190661477 x 100 = 279.38%