-76.77% is the change from 663 to 154
Calculation steps:
[( 154 - 663 ) ÷ 663] x 100 = -76.77%
Formula
Percentage change = [(154 - 663) / 663] x 100
Subtract the new number by the original number
154 - 663 = -509
-509 ÷ 663 = -0.7677224736048266
-0.7677224736048266 x 100 = -76.77%