-94.56% is the change from 551 to 30
Calculation steps:
[( 30 - 551 ) ÷ 551] x 100 = -94.56%
Formula
Percentage change = [(30 - 551) / 551] x 100
Subtract the new number by the original number
30 - 551 = -521
-521 ÷ 551 = -0.9455535390199638
-0.9455535390199638 x 100 = -94.56%