274.39% is the change from 82 to 307
Calculation steps:
[( 307 - 82 ) ÷ 82] x 100 = 274.39%
Formula
Percentage change = [(307 - 82) / 82] x 100
Subtract the new number by the original number
307 - 82 = 225
225 ÷ 82 = 2.7439024390243905
2.7439024390243905 x 100 = 274.39%