-66.6% is the change from 934 to 312
Calculation steps:
[( 312 - 934 ) ÷ 934] x 100 = -66.6%
Formula
Percentage change = [(312 - 934) / 934] x 100
Subtract the new number by the original number
312 - 934 = -622
-622 ÷ 934 = -0.6659528907922913
-0.6659528907922913 x 100 = -66.6%