-64.13% is the change from 421 to 151
Calculation steps:
[( 151 - 421 ) ÷ 421] x 100 = -64.13%
Formula
Percentage change = [(151 - 421) / 421] x 100
Subtract the new number by the original number
151 - 421 = -270
-270 ÷ 421 = -0.6413301662707839
-0.6413301662707839 x 100 = -64.13%