376.3% is the change from 135 to 643
Calculation steps:
[( 643 - 135 ) ÷ 135] x 100 = 376.3%
Formula
Percentage change = [(643 - 135) / 135] x 100
Subtract the new number by the original number
643 - 135 = 508
508 ÷ 135 = 3.762962962962963
3.762962962962963 x 100 = 376.3%