-84.77% is the change from 663 to 101
Calculation steps:
[( 101 - 663 ) ÷ 663] x 100 = -84.77%
Formula
Percentage change = [(101 - 663) / 663] x 100
Subtract the new number by the original number
101 - 663 = -562
-562 ÷ 663 = -0.8476621417797888
-0.8476621417797888 x 100 = -84.77%