-15.38% is the change from 975 to 825
Calculation steps:
[( 825 - 975 ) ÷ 975] x 100 = -15.38%
Formula
Percentage change = [(825 - 975) / 975] x 100
Subtract the new number by the original number
825 - 975 = -150
-150 ÷ 975 = -0.15384615384615385
-0.15384615384615385 x 100 = -15.38%