-66.81% is the change from 934 to 310
Calculation steps:
[( 310 - 934 ) ÷ 934] x 100 = -66.81%
Formula
Percentage change = [(310 - 934) / 934] x 100
Subtract the new number by the original number
310 - 934 = -624
-624 ÷ 934 = -0.6680942184154176
-0.6680942184154176 x 100 = -66.81%