-66% is the change from 950 to 323
Calculation steps:
[( 323 - 950 ) ÷ 950] x 100 = -66%
Formula
Percentage change = [(323 - 950) / 950] x 100
Subtract the new number by the original number
323 - 950 = -627
-627 ÷ 950 = -0.66
-0.66 x 100 = -66%
Example