-34.37% is the change from 966 to 634
Calculation steps:
[( 634 - 966 ) ÷ 966] x 100 = -34.37%
Formula
Percentage change = [(634 - 966) / 966] x 100
Subtract the new number by the original number
634 - 966 = -332
-332 ÷ 966 = -0.34368530020703936
-0.34368530020703936 x 100 = -34.37%