-97.78% is the change from 451 to 10
Calculation steps:
[( 10 - 451 ) ÷ 451] x 100 = -97.78%
Formula
Percentage change = [(10 - 451) / 451] x 100
Subtract the new number by the original number
10 - 451 = -441
-441 ÷ 451 = -0.9778270509977827
-0.9778270509977827 x 100 = -97.78%