135.38% is the change from 260 to 612
Calculation steps:
[( 612 - 260 ) ÷ 260] x 100 = 135.38%
Formula
Percentage change = [(612 - 260) / 260] x 100
Subtract the new number by the original number
612 - 260 = 352
352 ÷ 260 = 1.353846153846154
1.353846153846154 x 100 = 135.38%