-60.23% is the change from 518 to 206
Calculation steps:
[( 206 - 518 ) ÷ 518] x 100 = -60.23%
Formula
Percentage change = [(206 - 518) / 518] x 100
Subtract the new number by the original number
206 - 518 = -312
-312 ÷ 518 = -0.6023166023166023
-0.6023166023166023 x 100 = -60.23%