85.4% is the change from 274 to 508
Calculation steps:
[( 508 - 274 ) ÷ 274] x 100 = 85.4%
Formula
Percentage change = [(508 - 274) / 274] x 100
Subtract the new number by the original number
508 - 274 = 234
234 ÷ 274 = 0.8540145985401459
0.8540145985401459 x 100 = 85.4%