-89.4% is the change from 519 to 55
Calculation steps:
[( 55 - 519 ) ÷ 519] x 100 = -89.4%
Formula
Percentage change = [(55 - 519) / 519] x 100
Subtract the new number by the original number
55 - 519 = -464
-464 ÷ 519 = -0.8940269749518305
-0.8940269749518305 x 100 = -89.4%