-15.57% is the change from 623 to 526
Calculation steps:
[( 526 - 623 ) ÷ 623] x 100 = -15.57%
Formula
Percentage change = [(526 - 623) / 623] x 100
Subtract the new number by the original number
526 - 623 = -97
-97 ÷ 623 = -0.15569823434991975
-0.15569823434991975 x 100 = -15.57%