17.9% is the change from 391 to 461
Calculation steps:
[( 461 - 391 ) ÷ 391] x 100 = 17.9%
Formula
Percentage change = [(461 - 391) / 391] x 100
Subtract the new number by the original number
461 - 391 = 70
70 ÷ 391 = 0.17902813299232737
0.17902813299232737 x 100 = 17.9%