-42.64% is the change from 931 to 534
Calculation steps:
[( 534 - 931 ) ÷ 931] x 100 = -42.64%
Formula
Percentage change = [(534 - 931) / 931] x 100
Subtract the new number by the original number
534 - 931 = -397
-397 ÷ 931 = -0.4264232008592911
-0.4264232008592911 x 100 = -42.64%