-84.15% is the change from 915 to 145
Calculation steps:
[( 145 - 915 ) ÷ 915] x 100 = -84.15%
Formula
Percentage change = [(145 - 915) / 915] x 100
Subtract the new number by the original number
145 - 915 = -770
-770 ÷ 915 = -0.8415300546448088
-0.8415300546448088 x 100 = -84.15%