-63.23% is the change from 620 to 228
Calculation steps:
[( 228 - 620 ) ÷ 620] x 100 = -63.23%
Formula
Percentage change = [(228 - 620) / 620] x 100
Subtract the new number by the original number
228 - 620 = -392
-392 ÷ 620 = -0.632258064516129
-0.632258064516129 x 100 = -63.23%