-17% is the change from 747 to 620
Calculation steps:
[( 620 - 747 ) ÷ 747] x 100 = -17%
Formula
Percentage change = [(620 - 747) / 747] x 100
Subtract the new number by the original number
620 - 747 = -127
-127 ÷ 747 = -0.17001338688085676
-0.17001338688085676 x 100 = -17%