-35.84% is the change from 971 to 623
Calculation steps:
[( 623 - 971 ) ÷ 971] x 100 = -35.84%
Formula
Percentage change = [(623 - 971) / 971] x 100
Subtract the new number by the original number
623 - 971 = -348
-348 ÷ 971 = -0.3583934088568486
-0.3583934088568486 x 100 = -35.84%