-75.15% is the change from 648 to 161
Calculation steps:
[( 161 - 648 ) ÷ 648] x 100 = -75.15%
Formula
Percentage change = [(161 - 648) / 648] x 100
Subtract the new number by the original number
161 - 648 = -487
-487 ÷ 648 = -0.7515432098765432
-0.7515432098765432 x 100 = -75.15%