-31.21% is the change from 423 to 291
Calculation steps:
[( 291 - 423 ) ÷ 423] x 100 = -31.21%
Formula
Percentage change = [(291 - 423) / 423] x 100
Subtract the new number by the original number
291 - 423 = -132
-132 ÷ 423 = -0.3120567375886525
-0.3120567375886525 x 100 = -31.21%