-2.02% is the change from 940 to 921
Calculation steps:
[( 921 - 940 ) ÷ 940] x 100 = -2.02%
Formula
Percentage change = [(921 - 940) / 940] x 100
Subtract the new number by the original number
921 - 940 = -19
-19 ÷ 940 = -0.02021276595744681
-0.02021276595744681 x 100 = -2.02%