84.88% is the change from 172 to 318
Calculation steps:
[( 318 - 172 ) ÷ 172] x 100 = 84.88%
Formula
Percentage change = [(318 - 172) / 172] x 100
Subtract the new number by the original number
318 - 172 = 146
146 ÷ 172 = 0.8488372093023255
0.8488372093023255 x 100 = 84.88%