-49.17% is the change from 663 to 337
Calculation steps:
[( 337 - 663 ) ÷ 663] x 100 = -49.17%
Formula
Percentage change = [(337 - 663) / 663] x 100
Subtract the new number by the original number
337 - 663 = -326
-326 ÷ 663 = -0.4917043740573152
-0.4917043740573152 x 100 = -49.17%