-35.51% is the change from 966 to 623
Calculation steps:
[( 623 - 966 ) ÷ 966] x 100 = -35.51%
Formula
Percentage change = [(623 - 966) / 966] x 100
Subtract the new number by the original number
623 - 966 = -343
-343 ÷ 966 = -0.35507246376811596
-0.35507246376811596 x 100 = -35.51%