-64.53% is the change from 623 to 221
Calculation steps:
[( 221 - 623 ) ÷ 623] x 100 = -64.53%
Formula
Percentage change = [(221 - 623) / 623] x 100
Subtract the new number by the original number
221 - 623 = -402
-402 ÷ 623 = -0.6452648475120385
-0.6452648475120385 x 100 = -64.53%