-66.86% is the change from 513 to 170
Calculation steps:
[( 170 - 513 ) ÷ 513] x 100 = -66.86%
Formula
Percentage change = [(170 - 513) / 513] x 100
Subtract the new number by the original number
170 - 513 = -343
-343 ÷ 513 = -0.6686159844054581
-0.6686159844054581 x 100 = -66.86%