-2.13% is the change from 941 to 921
Calculation steps:
[( 921 - 941 ) ÷ 941] x 100 = -2.13%
Formula
Percentage change = [(921 - 941) / 941] x 100
Subtract the new number by the original number
921 - 941 = -20
-20 ÷ 941 = -0.021253985122210415
-0.021253985122210415 x 100 = -2.13%