505.84% is the change from 137 to 830
Calculation steps:
[( 830 - 137 ) ÷ 137] x 100 = 505.84%
Formula
Percentage change = [(830 - 137) / 137] x 100
Subtract the new number by the original number
830 - 137 = 693
693 ÷ 137 = 5.0583941605839415
5.0583941605839415 x 100 = 505.84%