2.18% is the change from 918 to 938
Calculation steps:
[( 938 - 918 ) ÷ 918] x 100 = 2.18%
Formula
Percentage change = [(938 - 918) / 918] x 100
Subtract the new number by the original number
938 - 918 = 20
20 ÷ 918 = 0.02178649237472767
0.02178649237472767 x 100 = 2.18%