-2.13% is the change from 938 to 918
Calculation steps:
[( 918 - 938 ) ÷ 938] x 100 = -2.13%
Formula
Percentage change = [(918 - 938) / 938] x 100
Subtract the new number by the original number
918 - 938 = -20
-20 ÷ 938 = -0.021321961620469083
-0.021321961620469083 x 100 = -2.13%