-19.79% is the change from 662 to 531
Calculation steps:
[( 531 - 662 ) ÷ 662] x 100 = -19.79%
Formula
Percentage change = [(531 - 662) / 662] x 100
Subtract the new number by the original number
531 - 662 = -131
-131 ÷ 662 = -0.19788519637462235
-0.19788519637462235 x 100 = -19.79%