21.99% is the change from 291 to 355
Calculation steps:
[( 355 - 291 ) ÷ 291] x 100 = 21.99%
Formula
Percentage change = [(355 - 291) / 291] x 100
Subtract the new number by the original number
355 - 291 = 64
64 ÷ 291 = 0.21993127147766323
0.21993127147766323 x 100 = 21.99%