55.95% is the change from 311 to 485
Calculation steps:
[( 485 - 311 ) ÷ 311] x 100 = 55.95%
Formula
Percentage change = [(485 - 311) / 311] x 100
Subtract the new number by the original number
485 - 311 = 174
174 ÷ 311 = 0.5594855305466238
0.5594855305466238 x 100 = 55.95%