64.6% is the change from 274 to 451
Calculation steps:
[( 451 - 274 ) ÷ 274] x 100 = 64.6%
Formula
Percentage change = [(451 - 274) / 274] x 100
Subtract the new number by the original number
451 - 274 = 177
177 ÷ 274 = 0.6459854014598541
0.6459854014598541 x 100 = 64.6%