-66.86% is the change from 519 to 172
Calculation steps:
[( 172 - 519 ) ÷ 519] x 100 = -66.86%
Formula
Percentage change = [(172 - 519) / 519] x 100
Subtract the new number by the original number
172 - 519 = -347
-347 ÷ 519 = -0.6685934489402697
-0.6685934489402697 x 100 = -66.86%