84.31% is the change from 274 to 505
Calculation steps:
[( 505 - 274 ) ÷ 274] x 100 = 84.31%
Formula
Percentage change = [(505 - 274) / 274] x 100
Subtract the new number by the original number
505 - 274 = 231
231 ÷ 274 = 0.843065693430657
0.843065693430657 x 100 = 84.31%