-0.95% is the change from 421 to 417
Calculation steps:
[( 417 - 421 ) ÷ 421] x 100 = -0.95%
Formula
Percentage change = [(417 - 421) / 421] x 100
Subtract the new number by the original number
417 - 421 = -4
-4 ÷ 421 = -0.009501187648456057
-0.009501187648456057 x 100 = -0.95%