-66.7% is the change from 934 to 311
Calculation steps:
[( 311 - 934 ) ÷ 934] x 100 = -66.7%
Formula
Percentage change = [(311 - 934) / 934] x 100
Subtract the new number by the original number
311 - 934 = -623
-623 ÷ 934 = -0.6670235546038544
-0.6670235546038544 x 100 = -66.7%