-17.88% is the change from 755 to 620
Calculation steps:
[( 620 - 755 ) ÷ 755] x 100 = -17.88%
Formula
Percentage change = [(620 - 755) / 755] x 100
Subtract the new number by the original number
620 - 755 = -135
-135 ÷ 755 = -0.17880794701986755
-0.17880794701986755 x 100 = -17.88%