-31.98% is the change from 985 to 670
Calculation steps:
[( 670 - 985 ) ÷ 985] x 100 = -31.98%
Formula
Percentage change = [(670 - 985) / 985] x 100
Subtract the new number by the original number
670 - 985 = -315
-315 ÷ 985 = -0.3197969543147208
-0.3197969543147208 x 100 = -31.98%