-59.88% is the change from 663 to 266
Calculation steps:
[( 266 - 663 ) ÷ 663] x 100 = -59.88%
Formula
Percentage change = [(266 - 663) / 663] x 100
Subtract the new number by the original number
266 - 663 = -397
-397 ÷ 663 = -0.5987933634992458
-0.5987933634992458 x 100 = -59.88%