261.15% is the change from 139 to 502
Calculation steps:
[( 502 - 139 ) ÷ 139] x 100 = 261.15%
Formula
Percentage change = [(502 - 139) / 139] x 100
Subtract the new number by the original number
502 - 139 = 363
363 ÷ 139 = 2.6115107913669067
2.6115107913669067 x 100 = 261.15%