138.46% is the change from 260 to 620
Calculation steps:
[( 620 - 260 ) ÷ 260] x 100 = 138.46%
Formula
Percentage change = [(620 - 260) / 260] x 100
Subtract the new number by the original number
620 - 260 = 360
360 ÷ 260 = 1.3846153846153846
1.3846153846153846 x 100 = 138.46%