-99.3% is the change from 427 to 3
Calculation steps:
[( 3 - 427 ) ÷ 427] x 100 = -99.3%
Formula
Percentage change = [(3 - 427) / 427] x 100
Subtract the new number by the original number
3 - 427 = -424
-424 ÷ 427 = -0.9929742388758782
-0.9929742388758782 x 100 = -99.3%