-19.3% is the change from 715 to 577
Calculation steps:
[( 577 - 715 ) ÷ 715] x 100 = -19.3%
Formula
Percentage change = [(577 - 715) / 715] x 100
Subtract the new number by the original number
577 - 715 = -138
-138 ÷ 715 = -0.193006993006993
-0.193006993006993 x 100 = -19.3%