164.15% is the change from 318 to 840
Calculation steps:
[( 840 - 318 ) ÷ 318] x 100 = 164.15%
Formula
Percentage change = [(840 - 318) / 318] x 100
Subtract the new number by the original number
840 - 318 = 522
522 ÷ 318 = 1.6415094339622642
1.6415094339622642 x 100 = 164.15%