-34.31% is the change from 921 to 605
Calculation steps:
[( 605 - 921 ) ÷ 921] x 100 = -34.31%
Formula
Percentage change = [(605 - 921) / 921] x 100
Subtract the new number by the original number
605 - 921 = -316
-316 ÷ 921 = -0.34310532030401736
-0.34310532030401736 x 100 = -34.31%