-67.67% is the change from 959 to 310
Calculation steps:
[( 310 - 959 ) ÷ 959] x 100 = -67.67%
Formula
Percentage change = [(310 - 959) / 959] x 100
Subtract the new number by the original number
310 - 959 = -649
-649 ÷ 959 = -0.6767466110531803
-0.6767466110531803 x 100 = -67.67%