78.42% is the change from 139 to 248
Calculation steps:
[( 248 - 139 ) ÷ 139] x 100 = 78.42%
Formula
Percentage change = [(248 - 139) / 139] x 100
Subtract the new number by the original number
248 - 139 = 109
109 ÷ 139 = 0.7841726618705036
0.7841726618705036 x 100 = 78.42%