-21.12% is the change from 663 to 523
Calculation steps:
[( 523 - 663 ) ÷ 663] x 100 = -21.12%
Formula
Percentage change = [(523 - 663) / 663] x 100
Subtract the new number by the original number
523 - 663 = -140
-140 ÷ 663 = -0.21116138763197587
-0.21116138763197587 x 100 = -21.12%