137.04% is the change from 135 to 320
Calculation steps:
[( 320 - 135 ) ÷ 135] x 100 = 137.04%
Formula
Percentage change = [(320 - 135) / 135] x 100
Subtract the new number by the original number
320 - 135 = 185
185 ÷ 135 = 1.3703703703703705
1.3703703703703705 x 100 = 137.04%