17.98% is the change from 356 to 420
Calculation steps:
[( 420 - 356 ) ÷ 356] x 100 = 17.98%
Formula
Percentage change = [(420 - 356) / 356] x 100
Subtract the new number by the original number
420 - 356 = 64
64 ÷ 356 = 0.1797752808988764
0.1797752808988764 x 100 = 17.98%