-38.46% is the change from 91 to 56
Calculation steps:
[( 56 - 91 ) ÷ 91] x 100 = -38.46%
Formula
Percentage change = [(56 - 91) / 91] x 100
Subtract the new number by the original number
56 - 91 = -35
-35 ÷ 91 = -0.38461538461538464
-0.38461538461538464 x 100 = -38.46%