57.1% is the change from 310 to 487
Calculation steps:
[( 487 - 310 ) ÷ 310] x 100 = 57.1%
Formula
Percentage change = [(487 - 310) / 310] x 100
Subtract the new number by the original number
487 - 310 = 177
177 ÷ 310 = 0.5709677419354838
0.5709677419354838 x 100 = 57.1%