-77.83% is the change from 451 to 100
Calculation steps:
[( 100 - 451 ) ÷ 451] x 100 = -77.83%
Formula
Percentage change = [(100 - 451) / 451] x 100
Subtract the new number by the original number
100 - 451 = -351
-351 ÷ 451 = -0.7782705099778271
-0.7782705099778271 x 100 = -77.83%