620.74% is the change from 135 to 973
Calculation steps:
[( 973 - 135 ) ÷ 135] x 100 = 620.74%
Formula
Percentage change = [(973 - 135) / 135] x 100
Subtract the new number by the original number
973 - 135 = 838
838 ÷ 135 = 6.207407407407407
6.207407407407407 x 100 = 620.74%