-67.1% is the change from 620 to 204
Calculation steps:
[( 204 - 620 ) ÷ 620] x 100 = -67.1%
Formula
Percentage change = [(204 - 620) / 620] x 100
Subtract the new number by the original number
204 - 620 = -416
-416 ÷ 620 = -0.6709677419354839
-0.6709677419354839 x 100 = -67.1%