-92.97% is the change from 427 to 30
Calculation steps:
[( 30 - 427 ) ÷ 427] x 100 = -92.97%
Formula
Percentage change = [(30 - 427) / 427] x 100
Subtract the new number by the original number
30 - 427 = -397
-397 ÷ 427 = -0.9297423887587822
-0.9297423887587822 x 100 = -92.97%