-29.93% is the change from 922 to 646
Calculation steps:
[( 646 - 922 ) ÷ 922] x 100 = -29.93%
Formula
Percentage change = [(646 - 922) / 922] x 100
Subtract the new number by the original number
646 - 922 = -276
-276 ÷ 922 = -0.2993492407809111
-0.2993492407809111 x 100 = -29.93%