45.33% is the change from 214 to 311
Calculation steps:
[( 311 - 214 ) ÷ 214] x 100 = 45.33%
Formula
Percentage change = [(311 - 214) / 214] x 100
Subtract the new number by the original number
311 - 214 = 97
97 ÷ 214 = 0.4532710280373832
0.4532710280373832 x 100 = 45.33%