-35.01% is the change from 994 to 646
Calculation steps:
[( 646 - 994 ) ÷ 994] x 100 = -35.01%
Formula
Percentage change = [(646 - 994) / 994] x 100
Subtract the new number by the original number
646 - 994 = -348
-348 ÷ 994 = -0.3501006036217304
-0.3501006036217304 x 100 = -35.01%