-65.47% is the change from 921 to 318
Calculation steps:
[( 318 - 921 ) ÷ 921] x 100 = -65.47%
Formula
Percentage change = [(318 - 921) / 921] x 100
Subtract the new number by the original number
318 - 921 = -603
-603 ÷ 921 = -0.6547231270358306
-0.6547231270358306 x 100 = -65.47%