-27.65% is the change from 915 to 662
Calculation steps:
[( 662 - 915 ) ÷ 915] x 100 = -27.65%
Formula
Percentage change = [(662 - 915) / 915] x 100
Subtract the new number by the original number
662 - 915 = -253
-253 ÷ 915 = -0.27650273224043714
-0.27650273224043714 x 100 = -27.65%