-91.35% is the change from 451 to 39
Calculation steps:
[( 39 - 451 ) ÷ 451] x 100 = -91.35%
Formula
Percentage change = [(39 - 451) / 451] x 100
Subtract the new number by the original number
39 - 451 = -412
-412 ÷ 451 = -0.9135254988913526
-0.9135254988913526 x 100 = -91.35%