-39.94% is the change from 994 to 597
Calculation steps:
[( 597 - 994 ) ÷ 994] x 100 = -39.94%
Formula
Percentage change = [(597 - 994) / 994] x 100
Subtract the new number by the original number
597 - 994 = -397
-397 ÷ 994 = -0.3993963782696177
-0.3993963782696177 x 100 = -39.94%