-35.82% is the change from 656 to 421
Calculation steps:
[( 421 - 656 ) ÷ 656] x 100 = -35.82%
Formula
Percentage change = [(421 - 656) / 656] x 100
Subtract the new number by the original number
421 - 656 = -235
-235 ÷ 656 = -0.35823170731707316
-0.35823170731707316 x 100 = -35.82%