-85.68% is the change from 915 to 131
Calculation steps:
[( 131 - 915 ) ÷ 915] x 100 = -85.68%
Formula
Percentage change = [(131 - 915) / 915] x 100
Subtract the new number by the original number
131 - 915 = -784
-784 ÷ 915 = -0.8568306010928962
-0.8568306010928962 x 100 = -85.68%