-67.56% is the change from 669 to 217
Calculation steps:
[( 217 - 669 ) ÷ 669] x 100 = -67.56%
Formula
Percentage change = [(217 - 669) / 669] x 100
Subtract the new number by the original number
217 - 669 = -452
-452 ÷ 669 = -0.6756352765321375
-0.6756352765321375 x 100 = -67.56%