32.91% is the change from 316 to 420
Calculation steps:
[( 420 - 316 ) ÷ 316] x 100 = 32.91%
Formula
Percentage change = [(420 - 316) / 316] x 100
Subtract the new number by the original number
420 - 316 = 104
104 ÷ 316 = 0.3291139240506329
0.3291139240506329 x 100 = 32.91%