-68.17% is the change from 421 to 134
Calculation steps:
[( 134 - 421 ) ÷ 421] x 100 = -68.17%
Formula
Percentage change = [(134 - 421) / 421] x 100
Subtract the new number by the original number
134 - 421 = -287
-287 ÷ 421 = -0.6817102137767221
-0.6817102137767221 x 100 = -68.17%