171.8% is the change from 305 to 829
Calculation steps:
[( 829 - 305 ) ÷ 305] x 100 = 171.8%
Formula
Percentage change = [(829 - 305) / 305] x 100
Subtract the new number by the original number
829 - 305 = 524
524 ÷ 305 = 1.7180327868852459
1.7180327868852459 x 100 = 171.8%