-2.17% is the change from 922 to 902
Calculation steps:
[( 902 - 922 ) ÷ 922] x 100 = -2.17%
Formula
Percentage change = [(902 - 922) / 922] x 100
Subtract the new number by the original number
902 - 922 = -20
-20 ÷ 922 = -0.021691973969631236
-0.021691973969631236 x 100 = -2.17%