180% is the change from 305 to 854
Calculation steps:
[( 854 - 305 ) ÷ 305] x 100 = 180%
Formula
Percentage change = [(854 - 305) / 305] x 100
Subtract the new number by the original number
854 - 305 = 549
549 ÷ 305 = 1.8
1.8 x 100 = 180%
Example