-34.68% is the change from 421 to 275
Calculation steps:
[( 275 - 421 ) ÷ 421] x 100 = -34.68%
Formula
Percentage change = [(275 - 421) / 421] x 100
Subtract the new number by the original number
275 - 421 = -146
-146 ÷ 421 = -0.34679334916864607
-0.34679334916864607 x 100 = -34.68%