21.29% is the change from 310 to 376
Calculation steps:
[( 376 - 310 ) ÷ 310] x 100 = 21.29%
Formula
Percentage change = [(376 - 310) / 310] x 100
Subtract the new number by the original number
376 - 310 = 66
66 ÷ 310 = 0.2129032258064516
0.2129032258064516 x 100 = 21.29%