-55.32% is the change from 620 to 277
Calculation steps:
[( 277 - 620 ) ÷ 620] x 100 = -55.32%
Formula
Percentage change = [(277 - 620) / 620] x 100
Subtract the new number by the original number
277 - 620 = -343
-343 ÷ 620 = -0.5532258064516129
-0.5532258064516129 x 100 = -55.32%