-68.13% is the change from 455 to 145
Calculation steps:
[( 145 - 455 ) ÷ 455] x 100 = -68.13%
Formula
Percentage change = [(145 - 455) / 455] x 100
Subtract the new number by the original number
145 - 455 = -310
-310 ÷ 455 = -0.6813186813186813
-0.6813186813186813 x 100 = -68.13%