150% is the change from 338 to 845
Calculation steps:
[( 845 - 338 ) ÷ 338] x 100 = 150%
Formula
Percentage change = [(845 - 338) / 338] x 100
Subtract the new number by the original number
845 - 338 = 507
507 ÷ 338 = 1.5
1.5 x 100 = 150%
Example