274.71% is the change from 257 to 963
Calculation steps:
[( 963 - 257 ) ÷ 257] x 100 = 274.71%
Formula
Percentage change = [(963 - 257) / 257] x 100
Subtract the new number by the original number
963 - 257 = 706
706 ÷ 257 = 2.747081712062257
2.747081712062257 x 100 = 274.71%