-78.13% is the change from 663 to 145
Calculation steps:
[( 145 - 663 ) ÷ 663] x 100 = -78.13%
Formula
Percentage change = [(145 - 663) / 663] x 100
Subtract the new number by the original number
145 - 663 = -518
-518 ÷ 663 = -0.7812971342383107
-0.7812971342383107 x 100 = -78.13%