-64.09% is the change from 621 to 223
Calculation steps:
[( 223 - 621 ) ÷ 621] x 100 = -64.09%
Formula
Percentage change = [(223 - 621) / 621] x 100
Subtract the new number by the original number
223 - 621 = -398
-398 ÷ 621 = -0.6409017713365539
-0.6409017713365539 x 100 = -64.09%