-68.05% is the change from 673 to 215
Calculation steps:
[( 215 - 673 ) ÷ 673] x 100 = -68.05%
Formula
Percentage change = [(215 - 673) / 673] x 100
Subtract the new number by the original number
215 - 673 = -458
-458 ÷ 673 = -0.6805349182763745
-0.6805349182763745 x 100 = -68.05%