-29.83% is the change from 922 to 647
Calculation steps:
[( 647 - 922 ) ÷ 922] x 100 = -29.83%
Formula
Percentage change = [(647 - 922) / 922] x 100
Subtract the new number by the original number
647 - 922 = -275
-275 ÷ 922 = -0.2982646420824295
-0.2982646420824295 x 100 = -29.83%