16.97% is the change from 218 to 255
Calculation steps:
[( 255 - 218 ) ÷ 218] x 100 = 16.97%
Formula
Percentage change = [(255 - 218) / 218] x 100
Subtract the new number by the original number
255 - 218 = 37
37 ÷ 218 = 0.16972477064220184
0.16972477064220184 x 100 = 16.97%