21.8% is the change from 211 to 257
Calculation steps:
[( 257 - 211 ) ÷ 211] x 100 = 21.8%
Formula
Percentage change = [(257 - 211) / 211] x 100
Subtract the new number by the original number
257 - 211 = 46
46 ÷ 211 = 0.21800947867298578
0.21800947867298578 x 100 = 21.8%