-0.21% is the change from 940 to 938
Calculation steps:
[( 938 - 940 ) ÷ 940] x 100 = -0.21%
Formula
Percentage change = [(938 - 940) / 940] x 100
Subtract the new number by the original number
938 - 940 = -2
-2 ÷ 940 = -0.002127659574468085
-0.002127659574468085 x 100 = -0.21%