-64.9% is the change from 641 to 225
Calculation steps:
[( 225 - 641 ) ÷ 641] x 100 = -64.9%
Formula
Percentage change = [(225 - 641) / 641] x 100
Subtract the new number by the original number
225 - 641 = -416
-416 ÷ 641 = -0.6489859594383776
-0.6489859594383776 x 100 = -64.9%