-32.7% is the change from 636 to 428
Calculation steps:
[( 428 - 636 ) ÷ 636] x 100 = -32.7%
Formula
Percentage change = [(428 - 636) / 636] x 100
Subtract the new number by the original number
428 - 636 = -208
-208 ÷ 636 = -0.3270440251572327
-0.3270440251572327 x 100 = -32.7%