-65.47% is the change from 669 to 231
Calculation steps:
[( 231 - 669 ) ÷ 669] x 100 = -65.47%
Formula
Percentage change = [(231 - 669) / 669] x 100
Subtract the new number by the original number
231 - 669 = -438
-438 ÷ 669 = -0.6547085201793722
-0.6547085201793722 x 100 = -65.47%