-34.97% is the change from 918 to 597
Calculation steps:
[( 597 - 918 ) ÷ 918] x 100 = -34.97%
Formula
Percentage change = [(597 - 918) / 918] x 100
Subtract the new number by the original number
597 - 918 = -321
-321 ÷ 918 = -0.34967320261437906
-0.34967320261437906 x 100 = -34.97%