-66.39% is the change from 601 to 202
Calculation steps:
[( 202 - 601 ) ÷ 601] x 100 = -66.39%
Formula
Percentage change = [(202 - 601) / 601] x 100
Subtract the new number by the original number
202 - 601 = -399
-399 ÷ 601 = -0.6638935108153078
-0.6638935108153078 x 100 = -66.39%