-34.44% is the change from 421 to 276
Calculation steps:
[( 276 - 421 ) ÷ 421] x 100 = -34.44%
Formula
Percentage change = [(276 - 421) / 421] x 100
Subtract the new number by the original number
276 - 421 = -145
-145 ÷ 421 = -0.34441805225653205
-0.34441805225653205 x 100 = -34.44%