-68.21% is the change from 975 to 310
Calculation steps:
[( 310 - 975 ) ÷ 975] x 100 = -68.21%
Formula
Percentage change = [(310 - 975) / 975] x 100
Subtract the new number by the original number
310 - 975 = -665
-665 ÷ 975 = -0.6820512820512821
-0.6820512820512821 x 100 = -68.21%