-51.29% is the change from 620 to 302
Calculation steps:
[( 302 - 620 ) ÷ 620] x 100 = -51.29%
Formula
Percentage change = [(302 - 620) / 620] x 100
Subtract the new number by the original number
302 - 620 = -318
-318 ÷ 620 = -0.5129032258064516
-0.5129032258064516 x 100 = -51.29%