-66.39% is the change from 613 to 206
Calculation steps:
[( 206 - 613 ) ÷ 613] x 100 = -66.39%
Formula
Percentage change = [(206 - 613) / 613] x 100
Subtract the new number by the original number
206 - 613 = -407
-407 ÷ 613 = -0.6639477977161501
-0.6639477977161501 x 100 = -66.39%