-83.52% is the change from 455 to 75
Calculation steps:
[( 75 - 455 ) ÷ 455] x 100 = -83.52%
Formula
Percentage change = [(75 - 455) / 455] x 100
Subtract the new number by the original number
75 - 455 = -380
-380 ÷ 455 = -0.8351648351648352
-0.8351648351648352 x 100 = -83.52%