147.76% is the change from 335 to 830
Calculation steps:
[( 830 - 335 ) ÷ 335] x 100 = 147.76%
Formula
Percentage change = [(830 - 335) / 335] x 100
Subtract the new number by the original number
830 - 335 = 495
495 ÷ 335 = 1.4776119402985075
1.4776119402985075 x 100 = 147.76%