378.52% is the change from 135 to 646
Calculation steps:
[( 646 - 135 ) ÷ 135] x 100 = 378.52%
Formula
Percentage change = [(646 - 135) / 135] x 100
Subtract the new number by the original number
646 - 135 = 511
511 ÷ 135 = 3.785185185185185
3.785185185185185 x 100 = 378.52%