-45.1% is the change from 827 to 454
Calculation steps:
[( 454 - 827 ) ÷ 827] x 100 = -45.1%
Formula
Percentage change = [(454 - 827) / 827] x 100
Subtract the new number by the original number
454 - 827 = -373
-373 ÷ 827 = -0.45102781136638453
-0.45102781136638453 x 100 = -45.1%