174.75% is the change from 305 to 838
Calculation steps:
[( 838 - 305 ) ÷ 305] x 100 = 174.75%
Formula
Percentage change = [(838 - 305) / 305] x 100
Subtract the new number by the original number
838 - 305 = 533
533 ÷ 305 = 1.7475409836065574
1.7475409836065574 x 100 = 174.75%