-83.96% is the change from 455 to 73
Calculation steps:
[( 73 - 455 ) ÷ 455] x 100 = -83.96%
Formula
Percentage change = [(73 - 455) / 455] x 100
Subtract the new number by the original number
73 - 455 = -382
-382 ÷ 455 = -0.8395604395604396
-0.8395604395604396 x 100 = -83.96%