-82.9% is the change from 427 to 73
Calculation steps:
[( 73 - 427 ) ÷ 427] x 100 = -82.9%
Formula
Percentage change = [(73 - 427) / 427] x 100
Subtract the new number by the original number
73 - 427 = -354
-354 ÷ 427 = -0.8290398126463701
-0.8290398126463701 x 100 = -82.9%