91.63% is the change from 251 to 481
Calculation steps:
[( 481 - 251 ) ÷ 251] x 100 = 91.63%
Formula
Percentage change = [(481 - 251) / 251] x 100
Subtract the new number by the original number
481 - 251 = 230
230 ÷ 251 = 0.9163346613545816
0.9163346613545816 x 100 = 91.63%