-30.74% is the change from 771 to 534
Calculation steps:
[( 534 - 771 ) ÷ 771] x 100 = -30.74%
Formula
Percentage change = [(534 - 771) / 771] x 100
Subtract the new number by the original number
534 - 771 = -237
-237 ÷ 771 = -0.30739299610894943
-0.30739299610894943 x 100 = -30.74%