-67.26% is the change from 950 to 311
Calculation steps:
[( 311 - 950 ) ÷ 950] x 100 = -67.26%
Formula
Percentage change = [(311 - 950) / 950] x 100
Subtract the new number by the original number
311 - 950 = -639
-639 ÷ 950 = -0.6726315789473685
-0.6726315789473685 x 100 = -67.26%