-40.66% is the change from 669 to 397
Calculation steps:
[( 397 - 669 ) ÷ 669] x 100 = -40.66%
Formula
Percentage change = [(397 - 669) / 669] x 100
Subtract the new number by the original number
397 - 669 = -272
-272 ÷ 669 = -0.40657698056801195
-0.40657698056801195 x 100 = -40.66%