-67.52% is the change from 662 to 215
Calculation steps:
[( 215 - 662 ) ÷ 662] x 100 = -67.52%
Formula
Percentage change = [(215 - 662) / 662] x 100
Subtract the new number by the original number
215 - 662 = -447
-447 ÷ 662 = -0.675226586102719
-0.675226586102719 x 100 = -67.52%