-50.59% is the change from 421 to 208
Calculation steps:
[( 208 - 421 ) ÷ 421] x 100 = -50.59%
Formula
Percentage change = [(208 - 421) / 421] x 100
Subtract the new number by the original number
208 - 421 = -213
-213 ÷ 421 = -0.505938242280285
-0.505938242280285 x 100 = -50.59%