59.81% is the change from 311 to 497
Calculation steps:
[( 497 - 311 ) ÷ 311] x 100 = 59.81%
Formula
Percentage change = [(497 - 311) / 311] x 100
Subtract the new number by the original number
497 - 311 = 186
186 ÷ 311 = 0.5980707395498392
0.5980707395498392 x 100 = 59.81%